CN113783250B

CN113783250B - Automatic charging and power-off protection equipment for lithium battery

Info

Publication number: CN113783250B
Application number: CN202110942988.3A
Authority: CN
Inventors: 王慧娟
Original assignee: Yunshan Industry Shenzhen Co ltd
Current assignee: Yunshan Industry Shenzhen Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2023-08-15
Anticipated expiration: 2041-08-17
Also published as: CN113783250A

Abstract

The invention discloses automatic charging and power-off protection equipment for a lithium battery, and relates to the technical field of lithium battery charging. This automatic power-off protection equipment that charges of lithium cell, including the shell device, the shell device includes the shell, the right side rear end of shell is provided with the door hinge, one side fixed connection shell of door hinge, the other end fixedly connected with box door of door hinge, box door and shell adaptation, the right side surface front side fixedly connected with door handle of box door, the upper surface embedding fixedly connected with rolling bearing of shell, rolling bearing's inner circle fixedly connected with wire case, the inside of shell is provided with resetting means, resetting means includes the flat board, flat board fixed connection is on the inner wall of shell and be in the first half of shell, the line hole has been seted up at the upper surface middle part of flat board, the inside groove has been seted up on the inside wall in line hole, this automatic power-off protection equipment that charges of lithium cell avoids pulling the cable between each spare part of device and causes the damage of inside cable.

Description

Automatic charging and power-off protection equipment for lithium battery

Technical Field

The invention relates to the technical field of lithium battery charging, in particular to automatic charging and power-off protection equipment for a lithium battery.

Background

Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a positive/negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. At 70 s of the 20 th century, m.s. whittingham proposed and began to study lithium ion batteries. The chemical characteristics of lithium metal are very active, so that the processing, storage and use of lithium metal have very high requirements on environment. With the development of science and technology, lithium batteries have become the mainstream.

Most of the cables of the automatic lithium battery charging equipment on the market are exposed outside and cannot be installed in a selected direction, and most of the cables are installed on the outer side of the charging equipment, so that when the charging equipment is used for charging, people can bend the cables on the outer side at will for the convenience of charging, the external wires are bent frequently, the wires are easily weathered outside and are easily damaged after being bent for a long time, the service life of the device is greatly reduced, and the device is also dangerous to a certain extent.

Disclosure of Invention

The invention aims to provide automatic charging and power-off protection equipment for a lithium battery, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an automatic power-off protection equipment that charges of lithium cell, includes the shell device, the shell device includes the shell, the right side rear end of shell is provided with the door hinge, one side fixed connection shell of door hinge, the other end fixedly connected with box door of door hinge, box door and shell adaptation, the right side surface front side fixedly connected with door handle of box door, the upper surface embedding fixedly connected with rolling bearing of shell, rolling bearing's inner circle fixedly connected with wire box, the inside of shell is provided with resetting means, resetting means includes the flat board, flat board fixed connection is on the inner wall of shell and be in the upper half of shell, the line hole has been seted up at the upper surface middle part of flat board, the inside groove has been seted up on the inside wall in line hole, the inside groove is just right with rolling bearing, the inside in line hole is provided with fastener one and fastener two.

Preferably, the wire casing has all been seted up at the both ends of fastener one, the left surface middle part fixedly connected with spliced pole one of fastener one, the left end fixedly connected with spring post one of spliced pole one, spring post one insert in the inside groove and with the inside groove adaptation in the one end of keeping away from spliced pole one, the right-hand fastener that sets up of fastener one, fastener two and fastener one symmetry, fastener two and wire casing are in same horizontal plane and with the wire casing adaptation, fastener two's right flank middle part fixedly connected with spliced pole two, the right-hand member fixedly connected with spring post two of spliced pole, the right-hand member of spring post two inserts in the inside groove and with the inside groove adaptation.

Preferably, the fixed connection reset spring of both sides equidistance about the upper surface of dull and stereotyped, reset spring's quantity is two, two reset spring's upper end fixedly connected with line board, the even solidus hole of having seted up of equidistance on the upper surface of line board, fixedly connected with rubber pad on the inside wall in solidus hole.

Preferably, the outside of box is provided with socket device, socket device includes the socket, the rear end of socket inserts in the box and with box fixed connection, equidistant even embedding fixedly connected with inserts a section of thick bamboo on the back inner wall of socket, be provided with the plug wire device on inserting the back inner wall of section of thick bamboo, the draw-in groove has been seted up on the lower inner wall of socket, the left and right sides rear end of draw-in groove is provided with magnet, magnet embedding fixed connection is on the socket inner wall, the spout has been seted up to the front port upside of socket, the shape of spout includes the T style of calligraphy, perpendicular groove has all been seted up at both ends about the front port of socket.

Preferably, the front end of the socket device is provided with a cable device, the cable device comprises a cable coil, the specification of the cable coil is smaller than that of the socket, a cable head is fixedly connected to the rear end of the cable coil, a cable inserting column is fixedly mounted at the rear end of the cable head, the cable inserting column is opposite to the position of the inserting cylinder and is adaptive to the shape, a clamping block is fixedly connected to the lower side of the cable coil, the clamping block is made of a magnetic material, and the width of the clamping block is half of the width of the clamping groove.

Preferably, the outside of cable circle is provided with positioner, positioner includes the holding ring, the holding ring is fixed to be cup jointed the outside of cable, the equal fixedly connected with reference column in rear surface left and right sides of holding ring, the reference column is just right with the position of perpendicular groove and the specification of reference column is less than the specification of perpendicular groove, the push-and-pull rod one has been run through to the front surface upside of holding ring, push-and-pull rod one's front end fixedly connected with push-and-pull handle.

Preferably, the clamping groove is formed in the upper portion of the rear inner wall of the positioning ring, the clamping groove comprises an arc shape, a placing groove is formed in the upper inner wall of the clamping groove, the placing groove comprises a T-shaped structure, the placing groove is right opposite to the same specification of the sliding groove, a clamping column I and a clamping column II are arranged in the clamping groove, the clamping column I and the clamping column II are symmetrically arranged, the clamping column I and the clamping column II are matched with the clamping groove, a clamping shaft is arranged at one end, which is close to the clamping column I and the clamping column II, the clamping shaft is connected with the clamping column I and the clamping column II through a torsion spring, a sliding column is fixedly connected with the upper end of the clamping shaft, the sliding column penetrates through the clamping column I and the clamping column II, the sliding column comprises the T-shaped structure, the sliding column is matched with the placing groove, the sliding column is inserted into the placing groove, the front end of the clamping shaft is fixedly connected with a push-pull rod II, and the push-pull rod II penetrates through the positioning ring and the rod I.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the lithium battery automatic charging power-off protection device, through the design of the rotating bearing and the wire box, the wire box is firstly designed on the top surface of the shell, when the wire cable device connected from the top is externally connected, the distortion condition of the wire cable device in use can be reduced, meanwhile, the wire cable device is connected with the wire box through the socket device, the wire box can rotate in the direction of three hundred sixty degrees, the use direction of the wire cable device can be expanded to three hundred sixty degrees, the bending behavior of the wire cable device when the charging pile is used is avoided to a great extent, the wire cable device is in the external environment all the year round, the wire cable device is protected, and the service life of the wire cable device is prolonged.

(2) This automatic power-off protection equipment that charges of lithium cell through resetting means's design, through the design of line board, the fixed mounting of the used cable of will charging one inside at the rubber pad, all charging lines can all be clearly seen like this, the cable that the fixed dispersion that will pass through the rubber pad that simultaneously below set up is first and second, avoid long-term and the corner of inside groove to rub the damage, the line box rotation in the cooperation outside uses, when the line box rotates, the line of line board top can twist reverse, the new cable of in-process of torsion can shorten, at this moment through reset spring's existence, the line board can rise certain height along with the cable, avoid pulling the cable to cause the damage of inside cable between the rotatory in-process of line box between each spare part of device.

(3) This automatic power-off protection equipment that charges of lithium cell through reset spring's design, through reset spring's connection, at every turn when the device charges, the position of line case all probably changes, but after the use at every turn, owing to reset spring's existence for the line board can not have under the outside spacing circumstances of line case, independently resume original form, make the device all can carry out automatic reset at every turn after being used, the rotation that has avoided the line case makes inside cable twine repeatedly, the damage of cable has been avoided to a great extent, and automatic reset has increased the automatic performance of device.

(4) This automatic power-off protection equipment that charges of lithium cell, through the existence of draw-in groove, if the cable circle is straight state all the time then the fixture block can not enter into the draw-in groove, but because the cable circle itself is had certain weight, then the fixture block can automatic fall into the draw-in groove, if the vehicle error operation that charges, just start the vehicle that charges through pulling out the plug, like this under the pulling force effect of vehicle that charges, the fixture block will follow the draw-in groove and remove forward, thereby make cable spliced pole and the plug separation of the rearmost end of a section of thick bamboo, thereby carry out the outage processing of cable, guaranteed that the cable circle is in the state of electroless at this moment, avoid dangerous condition's emergence.

(5) According to the automatic charging and power-off protection equipment for the lithium battery, if the error condition is not found yet after the cable coil is pulled to be powered off, the cable coil can be continuously pulled, so that the cable can gradually become into an approximately straight state in the pulling process, the clamping block can not enter the clamping groove, the cable coil can be directly pulled out of the socket device by the charging vehicle, the connection is achieved, direct tearing of the cable after the cable is pulled is avoided, the cable can be repeatedly used, and the danger degree is reduced.

(6) According to the automatic charging and power-off protection equipment for the lithium battery, if the error condition is found in the process that the cable is powered off by the pulling car, the running charging car stops, the dangerous behavior is stopped in time, and as the clamping blocks are made of magnetic materials and the clamping grooves are made of the magnetic materials to attract each other, the cable which is not completely pulled out is subjected to the re-classifying treatment, and the self-recovery capacity of the device is improved.

(7) According to the automatic charging and power-off protection equipment for the lithium battery, if the cable is completely pulled out, the rear ends of the first and second cable coils can be clamped, then the front ends of the cable coils are straight, the positioning column is inserted into the uppermost end of the vertical groove, then the push-pull handle is pushed, the cable head and the cable inserting column are re-connected into the inserting cylinder, then the clamping block can fall into the clamping groove due to the attraction of the magnet, the front ends of the cable coils are separated from the first and second cable coils due to the clamping connection of the sliding groove and the sliding column, the push-pull handle is pulled again to pull the first and second cable coils back, so that the charging plug is re-inserted, the plug can be accurately reset through the design of the positioning device, the resetting positioning accuracy of the device is greatly improved, and the trouble of installing the plug is greatly reduced.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic diagram of a reset device according to the present invention;

FIG. 3 is a schematic view of a clip of the present invention;

FIG. 4 is a schematic diagram of a cable assembly connection of the present invention;

FIG. 5 is a schematic view of a positioning device according to the present invention.

In the figure: 1. a housing means; 101. a housing; 102. a door hinge; 103. a box door; 104. a door handle; 105. a rotating bearing; 106. a wire box; 2. a reset device; 201. a flat plate; 202. a wire hole; 203. an inner tank; 204. a first wire clamp; 205. a wire slot; 206. a first connecting column; 207. a first spring column; 208. a second wire clamp; 209. a second connecting column; 210. a second spring column; 211. a return spring; 212. a wire board; 213. a wire fixing hole; 214. a rubber pad; 3. a socket device; 301. a socket; 302. a plug cylinder; 303. a clamping groove; 304. a magnet; 305. a chute; 306. a vertical groove; 4. a cable device; 401. a cable loop; 402. a cable head; 403. a cable plug; 404. a clamping block; 5. a positioning device; 501. positioning columns; 502. a push-pull rod I; 503. push-pull handle; 504. a clamping groove; 505. a placement groove; 506. a clamping column I; 507. a second clamping column; 508. a clamping shaft; 509. a sliding column; 510. a push-pull rod II; 511. and a positioning ring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a lithium cell auto-charge outage protection equipment, including housing arrangement 1, housing arrangement 1 includes shell 101, the right side rear end of shell 101 is provided with door hinge 102, one side fixed connection shell 101 of door hinge 102, the other end fixedly connected with box door 103 of door hinge 102, box door 103 and shell 101 adaptation, the right side front side fixedly connected with door handle 104 of box door 103, the upper surface embedding fixedly connected with rolling bearing 105 of housing 101, rolling bearing 105's inner circle fixedly connected with wire case 106, housing 101's inside is provided with resetting means 2, resetting means 2 includes dull and stereotyped 201, dull and stereotyped 201 fixed connection is on housing 101's inner wall and be in housing 101's upper half, wire hole 202 has been seted up at dull and stereotyped 201's upper surface middle part, interior groove 203 has been seted up on wire hole 202's the inside wall, interior groove 203 is just right with rolling bearing 105, wire clamp one 204 and wire clamp two 208 are provided with to wire clamp 202's inside.

Wire slots 205 are formed in two ends of the wire clamp I204, a connecting post I206 is fixedly connected to the middle of the left surface of the wire clamp I204, a spring post I207 is fixedly connected to the left end of the connecting post I206, the spring post I207 is inserted into the inner groove 203 at the end far away from the connecting post I206 and is matched with the inner groove 203, a wire clamp II 208 is arranged on the right side of the wire clamp I204 and symmetrical to the wire clamp I204, the wire clamp II 208 is positioned on the same horizontal plane with the wire slots 205 and is matched with the wire slots 205, a connecting post II 209 is fixedly connected to the middle of the right side surface of the wire clamp II 208, a spring post II 210 is fixedly connected to the right end of the connecting post II 209, and the right end of the spring post II 210 is inserted into the inner groove 203 and is matched with the inner groove 203.

The front side and the back side of the upper surface of the flat plate 201 are uniformly and fixedly connected with reset springs 211, the number of the reset springs 211 is two, the upper ends of the two reset springs 211 are fixedly connected with a wire plate 212, wire fixing holes 213 are uniformly and uniformly formed in the upper surface of the wire plate 212 at equal intervals, and rubber pads 214 are fixedly connected to the inner side walls of the wire fixing holes 213.

The outside of line case 106 is provided with socket device 3, socket device 3 includes socket 301, the rear end of socket 301 inserts in line case 106 and with line case 106 fixed connection, equidistant even embedding fixedly connected with cartridge 302 on the back inner wall of socket 301, be provided with the plug wire device on the back inner wall of cartridge 302, draw-in groove 303 has been seted up on the lower inner wall of socket 301, the left and right sides rear end of draw-in groove 303 is provided with magnet 304, magnet 304 embedding fixed connection is on the socket 301 inner wall, spout 305 has been seted up to the front port upside of socket 301, the shape of spout 305 includes the T style of calligraphy, vertical groove 306 has all been seted up at both ends about the front port of socket 301.

The front end of the socket device 3 is provided with a cable device 4, the cable device 4 comprises a cable coil 401, the specification of the cable coil 401 is smaller than that of the socket 301, a cable head 402 is fixedly connected to the rear end of the cable coil 401, a cable inserting column 403 is fixedly arranged at the rear end of the cable head 402, the cable inserting column 403 is opposite to the inserting cylinder 302 in position and is adaptive to the shape, a clamping block 404 is fixedly connected to the lower side of the cable coil 401, the clamping block 404 comprises a magnetic material, when the cable inserting column 403 is completely inserted into the inserting cylinder 302, the clamping block 404 is placed tightly against the rear side of the clamping groove 303, and the width of the clamping block 404 is half of that of the clamping groove 303.

The outer side of the cable coil 401 is provided with a positioning device 5, the positioning device 5 comprises a positioning ring 511, the positioning ring 511 is fixedly sleeved on the outer side of the cable coil 401, when the cable plug 403 is fully inserted into the plug cylinder 302, the rear surface of the positioning ring 511 is tightly attached to the socket 301, the left and right sides of the back surface of the positioning ring 511 are fixedly connected with positioning columns 501, the positioning columns 501 are opposite to the vertical grooves 306, the specification of the positioning columns 501 is smaller than that of the vertical grooves 306, the upper side of the front surface of the positioning ring 511 is penetrated and sleeved with a first push-pull rod 502, and the front end of the first push-pull rod 502 is fixedly connected with a push-pull handle 503.

The upper portion of the rear inner wall of the positioning ring 511 is provided with a clamping groove 504, the shape of the clamping groove 504 comprises an arc shape, the upper inner wall of the clamping groove 504 is provided with a placing groove 505, the placing groove 505 comprises a T-shaped structure, the placing groove 505 is in the same specification and is opposite to the sliding groove 305, a clamping post I506 and a clamping post II 507 are arranged in the clamping groove 504, the clamping post I506 and the clamping post II 507 are symmetrically arranged, the clamping post I506 and the clamping post II 507 are matched with the clamping groove 504, one end, which is close to the clamping post I506 and the clamping post II 507, is provided with a clamping shaft 508, the clamping shaft 508 is connected with the clamping post I506 and the clamping post II 507 through a torsion spring, the upper end of the clamping shaft 508 is fixedly connected with a sliding post 509, the sliding post 509 penetrates through the clamping post I506 and the clamping post II 507, the shape of the sliding post 509 comprises a T shape, the sliding post 509 is matched with the placing groove 505, the sliding post 509 is inserted into the placing groove 505, the front end of the clamping shaft 508 is fixedly connected with a rod II 510, and the sliding rod II 510 penetrates the positioning ring 511 and is fixedly connected with the rod 502.

Working principle:

the first step: through the design of the rotating bearing 105 and the wire box 106, the wire box 106 is firstly designed on the top surface of the shell 101, when the cable device 4 connected from the top is externally connected, the distortion condition of the cable device 4 in use can be reduced, meanwhile, the cable device 4 is connected with the wire box 106 through the socket device 3, the wire box 106 can rotate in the direction of three hundred sixty degrees, which means that the use direction of the cable device 4 can be expanded to three hundred sixty degrees, so that the bending action of the cable device 4 when the charging pile is used is avoided to a great extent, the cable device 4 is in the external environment all the year round, the cable device 4 is well protected from bending, and the service life of the cable device 4 is prolonged.

And a second step of: through reset device 2's design, through the design of line board 212, the fixed mounting of the used cable of will charging one inside at rubber pad 214, all charging lines can all be clearly seen like this, the cable that the fixed dispersion that the below set up just simultaneously is passed through rubber pad 214 is spacing with fastener two 208, avoid long-term and the corner of inside groove 203 to rub the damage, the line of the outside of cooperation case 106 is rotatory to be used, when case 106 is rotatory, the line of line board 212 top can twist reverse, new cable can shorten at the in-process of torsion, at this moment through reset spring 211's existence, line board 212 can rise certain height along with the cable, avoid at the rotatory in-process of case 106, pull the cable between each spare part of device and cause the damage of inside cable.

And a third step of: through the design of reset spring 211, through reset spring 211's connection, every time when the device charges, the position of line case 106 all probably changes, but after the use at every turn, owing to reset spring 211's existence for line board 212 can not have under the outside spacing circumstances of line case 106, independently resume original form, make the device can all carry out automatic reset after being used at every turn, the rotation of line case 106 makes the cable of inside twine repeatedly, the damage of cable has been avoided to a great extent, and automatic reset has increased the automatic performance of device.

Fourth step: through the existence of the clamping groove 303, if the cable coil 401 is always in a straight state, the clamping blocks 404 cannot enter the clamping groove 303, but because the cable coil 401 is of a certain weight, the clamping blocks 404 can automatically fall into the clamping groove 303, if a charging car is in error operation, the charging car is started without pulling out a plug, and therefore under the pulling force of the charging car, the clamping blocks 404 can move forwards from the clamping groove 303, the cable inserting column 403 is separated from the plug at the rearmost end of the inserting cylinder 302, the power-off treatment of the cable is carried out, the cable coil 401 is guaranteed to be in a non-electric state at the moment, and dangerous situations are avoided.

Fifth step: if the error condition is not found after the cable coil 401 is pulled and powered off, the cable coil 401 will be pulled continuously, so that the cable 401 will gradually become approximately straight during the pulling process, and the clamping block 404 will not enter the clamping groove 303, so that the cable coil 401 will be pulled out of the socket device 3 directly by the charging vehicle, the connection avoids the direct tearing of the cable after being pulled, the cable can be reused, and the danger degree is reduced.

Sixth step: if the error condition is found in the charging vehicle running after the cable 401 is powered off by the pulling car, the dangerous behavior is stopped in time, and the clamping blocks 404 are made of magnetic materials, and the clamping grooves 303 are mutually attracted by the magnetic materials, so that the cable 401 which is not completely pulled out is subjected to the re-classification treatment, and the self-recovery capability of the device is improved.

Seventh step: if the cable is completely pulled out, the rear end of the cable 401 can be clamped through the first clamping column 506 and the second clamping column 507, then the front end of the cable 401 is straight, the positioning column 501 is inserted into the uppermost end of the vertical groove 306, then the push-pull handle 503 is pushed to re-insert the cable head 402 and the cable inserting column 403 into the inserting cylinder 302, then the clamping block 404 falls into the clamping groove 303 due to the attraction of the magnet 304, the front end of the cable 401 is separated from the first clamping column 506 and the second clamping column 507 due to the clamping connection of the sliding groove 305 and the sliding column 509, the push-pull handle 503 is pulled again to pull the first clamping column 506 and the second clamping column 507, so that the charging plug is re-inserted, the plug can be accurately reset through the design of the positioning device 5, the resetting positioning accuracy of the device is greatly improved, and the trouble of installing the plug is greatly reduced.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a lithium cell auto-charge outage protection equipment, includes casing device (1), casing device (1) includes shell (101), the right side rear end of shell (101) is provided with door hinge (102), one side fixed connection shell (101) of door hinge (102), the other end fixedly connected with box door (103) of door hinge (102), box door (103) and shell (101) adaptation, right side surface front side fixedly connected with door handle (104) of box door (103), its characterized in that: the utility model discloses a wire harness structure, including shell (101), upper surface embedding fixedly connected with rolling bearing (105), the inner circle fixedly connected with wire box (106) of rolling bearing (105), the inside of shell (101) is provided with resetting means (2), resetting means (2) are including dull and stereotyped (201), dull and stereotyped (201) fixed connection is on the inner wall of shell (101) and be in the first half of shell (101), wire hole (202) have been seted up at the upper surface middle part of dull and stereotyped (201), inside groove (203) have been seted up on the inside wall of wire hole (202), inside groove (203) are just right with rolling bearing (105), the inside of wire hole (202) is provided with fastener one (204) and fastener two (208).

2. The lithium battery automatic charging power-off protection device according to claim 1, wherein: wire slots (205) have all been seted up at the both ends of fastener one (204), the left surface middle part fixedly connected with spliced pole one (206) of fastener one (204), the left end fixedly connected with spring post one (207) of spliced pole one (206), spring post one (207) insert in inside groove (203) and with inside groove (203) adaptation in the one end that keeps away from spliced pole one (206), the right-hand fastener two (208) that set up of fastener one (204), fastener two (208) and fastener one (204) symmetry, fastener two (208) are in same horizontal plane with wire slots (205) and with wire slots (205) adaptation, the right flank middle part fixedly connected with spliced pole two (209) of fastener two (208), the right-hand member fixedly connected with spring post two (210) of spliced pole two (209), the right-hand member of spring post two (210) inserts in inside groove (203) and with inside groove (203) adaptation.

3. The lithium battery automatic charging power-off protection device according to claim 1, wherein: the fixed line type electric motor is characterized in that reset springs (211) are uniformly fixedly connected to the front side and the rear side of the upper surface of the flat plate (201) at equal intervals, the number of the reset springs (211) is two, a line plate (212) is fixedly connected to the upper ends of the two reset springs (211), line fixing holes (213) are uniformly formed in the upper surface of the line plate (212) at equal intervals, and rubber pads (214) are fixedly connected to the inner side walls of the line fixing holes (213).

4. The lithium battery automatic charging power-off protection device according to claim 1, wherein: the outside of the wire box (106) is provided with a socket device (3), the socket device (3) comprises a socket (301), the rear end of the socket (301) is inserted into the wire box (106) and fixedly connected with the wire box (106), a plug tube (302) is uniformly embedded and fixedly connected on the rear inner wall of the socket (301) at equal intervals, a plug wire device is arranged on the rear inner wall of the plug tube (302), the socket is characterized in that a clamping groove (303) is formed in the lower inner wall of the socket (301), magnets (304) are arranged at the rear ends of the left side and the right side of the clamping groove (303), the magnets (304) are embedded and fixedly connected on the inner wall of the socket (301), a sliding groove (305) is formed in the upper side of the front port of the socket (301), the shape of the sliding groove (305) comprises a T-shaped structure, and vertical grooves (306) are formed in the left end and the right end of the front port of the socket (301).

5. The lithium battery automatic charging power-off protection device according to claim 4, wherein: the front end of socket device (3) is provided with cable device (4), cable device (4) include cable circle (401), the specification of cable circle (401) is less than the specification of socket (301), the rear end fixedly connected with cable head (402) of cable circle (401), the rear end fixedly mounted of cable head (402) has cable spliced pole (403), cable spliced pole (403) just right and shape adaptation with cartridge (302) position, the downside fixedly connected with fixture block (404) of cable circle (401), the material of fixture block (404) includes magnetic material, the width of fixture block (404) is half of draw-in groove (303) width.

6. The lithium battery automatic charging power-off protection device according to claim 5, wherein: the cable coil (401) is provided with positioner (5) in the outside, positioner (5) are including holding ring (511), the outside of cable (401) is cup jointed in holding ring (511) is fixed, the equal fixedly connected with reference column (501) in rear surface left and right sides of holding ring (511), reference column (501) are just right with the position of perpendicular groove (306) and reference column (501) specification is less than the specification of perpendicular groove (306), push-and-pull rod (502) have been cup jointed in the front surface upside of holding ring (511), push-and-pull rod (502) front end fixedly connected with push-and-pull handle (503).

7. The lithium battery automatic charging power-off protection device according to claim 6, wherein: the upper part of the rear inner wall of the positioning ring (511) is provided with a clamp groove (504), the shape of the clamp groove (504) comprises an arc shape, the upper inner wall of the clamp groove (504) is provided with a clamp shaft (508), the shape of the clamp shaft (508) comprises a T-shaped shape, the clamp groove (505) is identical with the chute (305) in specification and is opposite to the chute (305), the inside of the clamp groove (504) is provided with a clamp post I (506) and a clamp post II (507), the clamp post I (506) and the clamp post II (507) are symmetrically arranged, the clamp post I (506) and the clamp post II (507) are matched with the clamp groove (504), the end, which is close to the clamp post I (506) and the clamp post II (507), of the clamp shaft (508) is connected with the clamp post I (506) and the clamp post II (507) through a torsion spring, the upper end of the clamp shaft (508) is fixedly connected with a sliding post (509), the sliding post (509) penetrates through the clamp post I (506) and the clamp post II (509), the end of the clamp shaft (509) is fixedly inserted into the clamp shaft (509), the clamp shaft (505) is connected with the clamp shaft (510), the second push-pull rod (510) penetrates through the positioning ring (511) and is fixedly connected with the first push-pull rod (502).